1066806841 has 2 divisors, whose sum is σ = 1066806842. Its totient is φ = 1066806840.

The previous prime is 1066806827. The next prime is 1066806859. The reversal of 1066806841 is 1486086601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 635040000 + 431766841 = 25200^2 + 20779^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066806841 - 2¹¹ = 1066804793 is a prime.

It is a super-2 number, since 2×1066806841² = 2276153672008798562, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1066806794 and 1066806803.

It is not a weakly prime, because it can be changed into another prime (1066806241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533403420 + 533403421.

It is an arithmetic number, because the mean of its divisors is an integer number (533403421).

Almost surely, 2^1066806841 is an apocalyptic number.

It is an amenable number.

1066806841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066806841 is an equidigital number, since it uses as much as digits as its factorization.

1066806841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 1066806841 is about 32662.0091390594. The cubic root of 1066806841 is about 1021.7906649451.

The spelling of 1066806841 in words is "one billion, sixty-six million, eight hundred six thousand, eight hundred forty-one".